r/COVID19 is a subreddit with 601k members. The community frequently discusses covid, vaccine, covid 19, long covid, and vaccination, and the most common flair used is general, academic report, preprint, vaccine research, and discussion thread.
In December 2019, SARS-CoV-2 emerged in the city of Wuhan, China. This subreddit seeks to facilitate scientific discussion of this potential global public health threat. We have very strict rules. Please make sure to read them before posting or commenting. Moderators may lock or remove comments or posts at their discretion.
Popular Topics in r/COVID19
#1
Covid
294 posts
#2
Vaccine
107 posts
#3
Covid 19
52 posts
#4
Long Covid
48 posts
#5
Vaccination
24 posts
#6
Research
24 posts
#7
Sars Cov 2
17 posts
#8
Symptoms
16 posts
#9
Mrna
15 posts
#10
Lab Leak
13 posts
Flair Used in r/COVID19
#1
General
: "Will COVID boosters be made forever like the flu shots, creating a de facto "second" flu shot for the rest of human civilization?"
48 posts
#2
Academic Report
: "Association between COVID-19 vaccination and sudden death in apparently healthy younger individuals: A population-based case-control study"
32 posts
#3
Preprint
: "Long COVID Prevalence among U.S. Adults: A State-level Ecological Analysis of the Contribution of COVID-19 Incidence, Severity of Acute Illness, COVID-19 Vaccination, and Chronic Conditions"
13 posts
#4
Vaccine Research
: "2024-2025 COVID-19 Vaccine and Major Adverse Cardiovascular Events Among US Veterans"
7 posts
#5
Discussion Thread
: "Monthly Scientific Discussion Thread - June 2026"
7 posts
#6
Academic Comment
: "What you should know about the new COVID-19 ‘Cicada’ variant, according to health experts"
4 posts
#7
Observational Study
: "Characteristics of young children hospitalized with acute respiratory failure from infection with RSV, SARS-CoV-2, or both, November 2023–March 2024"
4 posts
#8
Molecular/Phylogeny
: "Loss-of-function mutation in Omicron variants reduces spike protein expression and attenuates SARS-CoV-2 infection"
3 posts
#9
Press Release
: "Tsimané and Moseten peoples of lowland Bolivia demonstrate an intriguing case of epidemiological resilience"
3 posts
#10
Antivirals
: "Paxlovid shows organ-specific and age-specific impacts on risk of developing post-acute sequelae of COVID-19"
2 posts
Member Growth in r/COVID19
Yearly
-553 members(-0.1%)
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About
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Last updated: September 20, 2026